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International Conference on Quantum Communications, Networking, and Computing (QCNC)

On-Off Keyed Wireless Quantum Optical Communications via Turbulent Channels with Decoherence

Peter Jung, Kushtrim Dini

Published Apr 6, 2026• 0 citations
Publisher

Abstract

Recent research has given rise to the conjecture that wireless quantum optical communications should be considered as an attractive means of implementing future, e.g. sixth generation (6G), wireless networks in the case of timeinvariant quantum communication channels. In this manuscript the effect of on-off keyed wireless quantum optical communications via the time-varying quantum communication turbulence channel in the presence of thermal background radiation is studied for the first time. The simulation of the stochastic turbulence process, characterizing the time-varying quantum communication turbulence channel and yielding realizations of the average number of signal photons prevailing at the input of the quantum receiver, will be introduced and discussed. In this context, it will be illustrated that the turbulence exhibits log-normal fading. Also, the maximum-likelihood (ML) quantum data detector applicable to the case of quantum reception via the time-varying quantum communication turbulence channel will be given. Finally, simulation results of the bit error ratio (BER) obtained for several representative transmission scenarios will be presented. It is found that the said simulation results support the above-mentioned conjecture regarding future wireless networks.

DOI
10.1109/qcnc69040.2026.00130

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Research has shown that radio applications above300GHz300 \mathbf{G H z}300GHzrequire a very careful analog design that takes into account the frequency-dependent nature of ohmic resistance at these frequencies, bringing optical communication solutions for the sixth generation(6G)THz(6 \mathrm{G}) \text{THz}(6G)THzband located between 300 GHz and 10 THz, being well suited for short range links, into focus. The authors propose wireless quantum optical communications concepts replacing the classical radio frequency based inner physical layer transceivers used in classical channel coded short range wireless systems. Owing to low environmental interaction of such short range links, the coherence and interference ability when knowing and maintaining the carrier phase permits a beneficially robust transmission. Also, on the basis of today's wireless communication systems considering sophisticated channel codes such as the LTE turbo code and the WLAN LDPC code seems to be of greatest interest. Thus, besides illustrating the proposed wireless quantum optical communications concept, the optimum soft output quantum data detector for coherent reception with known carrier phase is discussed and both uncoded as well as novel channel coded bit error ratio performance results are presented.
Recent research has clarified that radio applications above 300 GHz require a laborious analog design that takes into account the frequency-dependent nature of ohmic resistance at these frequencies, bringing optical communication solutions, well suited for short range links in the sixth generation (6G) THz band located between 300 GHz and 10 THz, into focus. In particular, wireless quantum optical communication concepts are attractive, replacing the classical radio frequency based inner physical layer transceivers used in channel coded short range wireless communication systems. In particular, due to low environmental interaction of short range links, the prevailing coherence and interference ability when knowing and maintaining the carrier phase permits a beneficially robust wireless quantum optical transmission. In this manuscript, the viability of connecting the 5G/New Radio polar code and the proposed wireless quantum optical communication concept, which uses the optimum soft output quantum data detector for coherent reception with known carrier phase, is demonstrated by means of performance results.
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This letter presents the performance analysis of classical data transmission over a quantum channel in the presence of atmospheric turbulence. To transmit classical data, quantum coherent states are modulated over a log-normal turbulent channel for satellite-to-ground applications. The expression for the number of photons in the turbulent coherent state is approximated. Performance analysis is done in terms of error probability, channel capacity, and quantum bit error rate (QBER). The simulation results are presented using the Monte-Carlo simulation method. Numerical results show that the error performance improves with increasing the number of signal photons. However, for turbulence strength greater than 0.8, QBER increases more rapidly with a higher number of signal photons. Hence, a trade-off is essential between an achievable QBER and the number of signal photons.